Which 4" crank for 340 build ? - Moparts Forums

Register Log In Moparts Forums Unlawfl's Race & Engine Tech Which 4" crank for 340 build ?

Print Thread

Page 1 of 2

1

2

Which 4" crank for 340 build ? #462404 09/07/09 07:24 PM 09/07/09 07:24 PM
Joined: Dec 2006 Posts: 454 PNW B Beebuzzn OP mopar
Beebuzzn OP mopar B Joined: Dec 2006 Posts: 454 PNW	Taking my 68' 340 std bore block in to get sonic checked and see how the bores look this week and need to start ordering parts. This is going to be street/strip type build. I'm looking at a few different forged cranks. K1 heavy but cheaper, Scat and Callies which are lighter but more $$ Is 10-12 lbs savings worth the extra $$$ I plan on going with scat 4340 I beam rods.

Re: Which 4" crank for 340 build ? [Re: Beebuzzn] #462405 09/07/09 07:29 PM 09/07/09 07:29 PM
Joined: Oct 2006 Posts: 4,765 Q quick77rt Parts Problem
quick77rt Parts Problem Q Joined: Oct 2006 Posts: 4,765	Is 10-12 lbs savings worth the extra $$$ Make sure your not going to have to spend $$$ on getting the lighter weight crank balanced. The K1 and ones like it (weight) ended up in an internal balance with no $$$$ on balance weight.

Re: Which 4" crank for 340 build ? [Re: quick77rt ] #462406 09/07/09 07:41 PM 09/07/09 07:41 PM
Joined: Jan 2003 Posts: 42,714 Spokane Washington ScottSmith_Harms Mr Wizzard
ScottSmith_Harms Mr Wizzard Joined: Jan 2003 Posts: 42,714 Spokane Washington	I've owned a couple at the same time, a Callies Dragonslayer and a Scat Lightweight, I chose to build my engine using the Scat because it was lighter, both appeared to be excellent cranks and were delivered within spec, no problem, never used a K1 but hear good things. Using Carillo steel rods (which are pretty light) and Diamond Lightweight pistons my crank required no extra metal to balance it. I am a believer in keeping the lower end as light as possible for reasons of longevity, one possible side benifit is a quicker reving engine/better 60 ft times, but I doubt it's a huge difference. Contact Ryan at Shady Dell, he knows about all there is about them, he can probably lead you the right way.

Re: Which 4" crank for 340 build ? [Re: ScottSmith_Harms] #462407 09/07/09 08:02 PM 09/07/09 08:02 PM
Joined: Dec 2006 Posts: 454 PNW B Beebuzzn OP mopar
Beebuzzn OP mopar B Joined: Dec 2006 Posts: 454 PNW	Thanks for the info and I plan on contacting Ryan J and a few others as I plan on running some iron x heads that will need a max effort to make them flow.

Re: Which 4" crank for 340 build ? [Re: Beebuzzn] #462408 09/07/09 08:19 PM 09/07/09 08:19 PM
Joined: Jan 2003 Posts: 31,048 Oregon A AndyF I Win
AndyF I Win A Joined: Jan 2003 Posts: 31,048 Oregon	Callies also has a 4.250 crank in stock, K1 has 4.125 cranks and Hughes has a 4.180 crank. Most of those kits will work with Chevy 6.125 or 6.200 connecting rods but the Hughes crank uses Quad 4 rod bearings. So a lot more choices than just the usual 4.00 inch crank.

Re: Which 4" crank for 340 build ? [Re: AndyF] #462409 09/07/09 08:26 PM 09/07/09 08:26 PM
Joined: Jan 2003 Posts: 42,714 Spokane Washington ScottSmith_Harms Mr Wizzard
ScottSmith_Harms Mr Wizzard Joined: Jan 2003 Posts: 42,714 Spokane Washington	Yea, my scat started life as a 4.0 but it was further customized and stroked to 4.125 to help me get to 426 cid. Back then the off the shelf over 4.0 cranks weren't around yet.

Re: Which 4" crank for 340 build ? [Re: Beebuzzn] #462410 09/07/09 08:36 PM 09/07/09 08:36 PM
Joined: Jan 2003 Posts: 5,486 SoCal Brian Hafliger master
Brian Hafliger master Joined: Jan 2003 Posts: 5,486 SoCal	Quote: Taking my 68' 340 std bore block in to get sonic checked and see how the bores look this week and need to start ordering parts. This is going to be street/strip type build. I'm looking at a few different forged cranks. K1 heavy but cheaper, Scat and Callies which are lighter but more $$ Is 10-12 lbs savings worth the extra $$$ I plan on going with scat 4340 I beam rods. That's what we do alot of...Scat 4340 4" cranks and I beam rods. If you have the money the liteweight crank is nice, but the std. weight will work and most likely will not be noticeable in a street/strip build. I also use KB forged pistons, total bobweight is around 1750-1760g. You will be very happy with this setup!! Brian Hafliger

Re: Which 4" crank for 340 build ? [Re: AndyF] #462411 09/07/09 08:37 PM 09/07/09 08:37 PM
Joined: Jul 2006 Posts: 4,595 On the south side of Nowhere S S/ST 3040 master
S/ST 3040 master S Joined: Jul 2006 Posts: 4,595 On the south side of Nowhere	I will NEVER buy another item with K-1 name on it.

Re: Which 4" crank for 340 build ? [Re: S/ST 3040] #462412 09/07/09 09:16 PM 09/07/09 09:16 PM
Joined: Jan 2003 Posts: 32,394 Q Quicktree I Win
Quicktree I Win Q Joined: Jan 2003 Posts: 32,394	Quote: I will NEVER buy another item with K-1 name on it. you can't make a statement like that without telling us why?

Re: Which 4" crank for 340 build ? [Re: S/ST 3040] #462413 09/07/09 09:17 PM 09/07/09 09:17 PM
Joined: Jan 2003 Posts: 465 Oconomowoc, WI. C Cudahlr mopar
Cudahlr mopar C Joined: Jan 2003 Posts: 465 Oconomowoc, WI.	Quote: I will NEVER buy another item with K-1 name on it. Please explain. 1968 Barracuda 360/727 11.20 @ 121 mph 421 rwhp 1985 Harley Sportster Bobber 2006 Ram 2500 sport - The Cudahlr

Re: Which 4" crank for 340 build ? [Re: Cudahlr] #462414 09/07/09 09:56 PM 09/07/09 09:56 PM
Joined: Jul 2006 Posts: 4,595 On the south side of Nowhere S S/ST 3040 master
S/ST 3040 master S Joined: Jul 2006 Posts: 4,595 On the south side of Nowhere	It has nothing to do with the crankshafts. https://board.moparts.org/ubbthreads/show...&PHPSESSID=

Re: Which 4" crank for 340 build ? [Re: S/ST 3040] #462415 09/07/09 10:34 PM 09/07/09 10:34 PM
A Anonymous Unregistered
Anonymous Unregistered A	Quote: It has nothing to do with the crankshafts. i talked with Tom over 2 years ago about 4.125 and 4.250 cranks. it's not like it's a new concept. i was also the guy that got the 360 main 4" cranks made. at the time i had a lot more than than 5 made. they came in on pallets. i believe i bought every 340/360 2.1 journal 4" crank they had available at the time. i wasn't privy to the conversation between Tom and BPE, but i do know that any time your looking for an exclusive deal, it usually takes more than 5 cranks, a lot more actually and you always want a signed contract. that's just good business. we've been very happy with the K-1 products and as far as i know, so have my customers. fortunately for all of us, we all have plenty of choices now for mopar crankshafts. Last edited by DRAM_Perf_Only; 09/07/09 10:36 PM.

Re: Which 4" crank for 340 build ? #462416 09/07/09 11:00 PM 09/07/09 11:00 PM
Joined: Jul 2006 Posts: 4,595 On the south side of Nowhere S S/ST 3040 master
S/ST 3040 master S Joined: Jul 2006 Posts: 4,595 On the south side of Nowhere	Dan........I have no intention of starting a pissing match with anybody here. I was privy to the conversations and the agreement. I hope you sell 40 Callies cranks this month.

Re: Which 4" crank for 340 build ? [Re: S/ST 3040] #462417 09/08/09 12:25 AM 09/08/09 12:25 AM
A Anonymous Unregistered
Anonymous Unregistered A	Quote: Dan........I have no intention of starting a pissing match with anybody here. I was privy to the conversations and the agreement. I hope you sell 40 Callies cranks this month. it's all good as far as i'm concerned, i hope i sell 40 callies cranks this month too.

Re: Which 4" crank for 340 build ? [Re: Brian Hafliger] #462418 09/08/09 12:36 AM 09/08/09 12:36 AM
Joined: Dec 2006 Posts: 454 PNW B Beebuzzn OP mopar
Beebuzzn OP mopar B Joined: Dec 2006 Posts: 454 PNW	I like the idea of going bigger than 4" stroke but since I will be using the old x heads with a max port job I still won't be able to maximize what a 4"stroke is capable of. I am looking at Diamond pistons around 9.5/1 and a hyd cam. This build up will be going in a 70 challenger 4 spd with 3.55 gears. Cam suggestions ? I have a comp xe284h and maybe use some 1.6 rockers ? I want to use my stock valve covers and I know that will limit my choice on the rockers.

Re: Which 4" crank for 340 build ? [Re: Beebuzzn] #462419 09/08/09 01:18 AM 09/08/09 01:18 AM
Joined: Jan 2003 Posts: 42,714 Spokane Washington ScottSmith_Harms Mr Wizzard
ScottSmith_Harms Mr Wizzard Joined: Jan 2003 Posts: 42,714 Spokane Washington	There's acouple ways to deal with rocker clearance in stock valve covers. The baffles can be removed and replaced with smaller/shallower ones, and you can use double VC gaskets to gain some clearance.

Re: Which 4" crank for 340 build ? [Re: ScottSmith_Harms] #462420 09/08/09 01:37 AM 09/08/09 01:37 AM
Joined: Sep 2004 Posts: 6,906 IL, Aurora A ademon master
ademon master A Joined: Sep 2004 Posts: 6,906 IL, Aurora	i had a post way back about the stock 340 v/c clearing the comp pro magnum rockers i have, another member said his cleared the comps without any mods, i did knock the baffles upward, i'm going to install them in a couple weeks, get the moroso silicon gaskets.

Re: Which 4" crank for 340 build ? [Re: ademon] #462421 09/08/09 05:03 AM 09/08/09 05:03 AM
Joined: Oct 2003 Posts: 11,684 W. Kentucky justinp61 I Live Here
justinp61 I Live Here Joined: Oct 2003 Posts: 11,684 W. Kentucky	Quote: i did knock the baffles upward, Same here, I ran 1.6 Hughes with my stock heads with .592" lift in stock valve covers. They're now on my Edelbrocks with .633" lift. If I were doing a 340 I would use a Callies Dragon Slayer. I have a K-1 in my 408, it checked out good.

Re: Which 4" crank for 340 build ? [Re: justinp61] #462422 09/08/09 08:27 AM 09/08/09 08:27 AM
Joined: Jul 2006 Posts: 9,366 Lehigh Acres, Florida rickstershemi master
rickstershemi master Joined: Jul 2006 Posts: 9,366 Lehigh Acres, Florida	My choice would be "Compstar" Rickster

Re: Which 4" crank for 340 build ? [Re: rickstershemi] #462423 09/08/09 08:42 AM 09/08/09 08:42 AM
Joined: Jul 2006 Posts: 4,595 On the south side of Nowhere S S/ST 3040 master
S/ST 3040 master S Joined: Jul 2006 Posts: 4,595 On the south side of Nowhere	The only Compstar cranks I see they are currently making for Mopar is for the 5.7 and 6.1 Hemi.

Page 1 of 2

1

2

Moderated by Al_Alguire, Hotwheelsjr, moparts, not_a_charger, RangerDan440, tboomer

Hop To

Powered by UBB.threads™ PHP Forum Software 7.7.1